Improvement in weft-stop mechanisms for looms



UNITED STATES PATENT OFFICE.

WILLIAM TAYLOR, OF BOSTON, MASS., ASSIGNOR TO THE AMERICAN STOP- MOTIONCOMPANY, OF SAME PLACE. i

IMPROVEMENT IN WEFVT-STOP MECHANISMS FOR LOOMS.Y

Specification forming part of Letters Patent No. 155,599, dated October6, 1874; application filed August 24, 1874.

To all whom it may concern: l

Beit known that I, WILLIAM TAYLOR, of Boston, in the county of Suiiolkand `State of Massachusetts, have invented certain new and usefulImprovements in Weft-Stop Mechanism for Looms, of which the followin g-tis a specification:

The nature of my invention consists in combining, with the weft-detecterletoff device, sliding daggers, located on the face of the lay, saiddaggers being so arranged and made to operate that when the weft-threadis in place they will not come in contactwith the shipping and stoppingdevices, which are attached to the breast-beam.

Figure 1 is a perspective view, showing` a part of my invention. Fig. 2is'a plan of my invention. Fig. 3 is a front elevation of the lay. Fig.4 shows an end view of thebreastbeam and a part of the knock 0E device.Fig. 5 is a plan to illustrate the action of the stopping device. Fig. 6is a rear elevation of the lay, showing the let-oft' device.

The detecter, grill, and fork V are made in the usual manner, and neednot be herein described.

` consists, brieily, of the cross-lever M,"Figs. 1,

3, and 5, which is attached to a shaft, N, Fig. 1, which passes throughthe lay, and has an arm,0, attached to it. This arm O is held by alatch, P, which is provided with an arm, R, so arranged, in connection.with the iinger or lappet S, that when the finger or lappet S is loweredby the fall of the detecter V through the grill, (in case of the absenceof the weftthread,) the arm Rywill be thrown down and the latch l?disconnected with the arm O. This action will allow the spring Y tothrow the shaft N and lever M around in the direction ofthe arrow, Figs.l and 3, and thus, acting through the rods L and K, draw the sliding`daggers B and H, Figs. 2, 3, and 5, in wardly--that is, toward thecenter of the lay. The sliding daggers H and B, Figs. 2 and 5, are madetirm and slide in the housings C, and are so placed that when held bythe arm O, Fig. 1, of the let-off device, they will pass' by, at eachstroke of the lay, the knock-off buttress X and the liXed buttress W,Fig. 2, but when a weft-thread is absent, then the let-off device freesthe arm O, as has been described, which allows the shaft N to rotate,and the cross-lever M to be thrown around, as indicated by the arrow,and thus draw, through the rods Kfand L, the sliding daggers B and Hinwardly to the position shown in Fig. 5, so that H will come in contactwith the xed buttress W, and B will come in contact with the knock-ofi'buttress X, thus stopping the forward motion of the lay. The knock-oli'buttress X is bent up in the rear of the breast-beam, as shown at Fig.4, its lower end G terminating in a lever, D, pivoted at U, Figs. 2 and'5. This lever D, at its outer end F, comes in contact with a secondlever, E, pivoted at I, and arranged to act so as to throw oft' theshipping-lever J, Fig. 2, whenever the buttress X is forced back by thedagger B, as shown in Fig. 5.

I do not confine myself to any particular device for connecting themoving buttress X with the device for knocking oft' the shippinglever.

The action of my invention is as follows: In starting the loom, thesliding daggers B and H are set as shown in Fig. 2, so that the laymaybeat up in the usual manner. Now, if the weft-thread is absent, thedetecter V will 'fall through the grill,'and, acting through the rod Tand finger or lappet S, will disconneet the latch P from the arm O, andthus cause the sliding daggers B and H to be drawn into the positionshown in Fig. 5-that is, to cause them (the dag-gers) to come in contactwith the buttress W and X. As the buttress X is removable, and projectsbeyond the buttress W, as shown in Fig. 2, it is hit by the dagger Bbefore the buttress W is hit by the dagger H. 'lhe first action (aftercontact) of the dagger B is to push back the buttress X and throw offthe shipping-lever J. The continued motion brings the bent part of thebuttress X (see Fig. 4) up against the breast-beam, at which point itwill resist further motion of the dagger B, and consequently of the lay.At

the same time that the' dagger B is stopped, as above described, thedagger H at the other end of the lay comes in contact with the fixedbuttress W, and is stopped. Thus both ends of the lay arel stoppedabruptly immediately after the belt-shipping device has been acted upon.f

I claim as my invention- I l. The combination of the'sliding daggers' Band H with the lay of a loom and the buttresses W and X, substantiallyas described,

and for the purpose set forth.

2. The combination of the weft-stop let-ott' device,`-theltnger S, thearm R, the latch P, the arm O, and shaft N with the cross-lever M androds L and K, operating to move the sliding daggers H and B,substantially as described, and for the purpose set forth.

i WILLIAM TAYLOR.

, Witnesses:

lFRANK G. PARKER, WILLIAM EDsoN.

